Provide addition impl for dis_rs::model::EntityType

[carlocorradini]

Provide the following implementations for dis_rs::model::EntityType:

• std::str::FromStr
• core::convert::TryFrom<&str>
• core::convert::TryFrom<String>
• std::fmt::Display

Examples:

let entity_type: dis_rs::model::EntityType = dis_rs::model::EntityType::from_str("0:1:2:3:4:5:6").unwrap();
let entity_type: dis_rs::model::EntityType = "0:1:2:3:4:5:6".try_into().unwrap();
let entity_type: dis_rs::model::EntityType = "0:1:2:3:4:5:6".to_string().try_into().unwrap();
println!("{entity_type}"); // 0:1:2:3:4:5:6

I'll try to provide a PR ASAP. Let me know what you think.

[zlubsen]

Those would be very logical and useful trait implementations.

[zlubsen]

Thanks!

[carlocorradini]

@zlubsen Thanks! Awesome library 🤯